Causing physical harm or injury; harmful, hurtful.
Causing harm to one's reputation; invidious, defamatory, libelous, slanderous.
Pertaining to suicide.
Likely to commit, or to attempt to commit, suicide.
Extremely reckless.
Highly likely to certain to result in the deaths of the participants; dangerous or reckless to such a degree as to be tantamount to suicide for those taking part.
Someone suicidal; someone likely to kill themselves.